Harper dtc8635p 4-in-1 convertible heavy duty hand truck – solid rubber wheels – 900 lb. Cap easily converts to four different truck positions and auto locks into place with no pins or clips to lose!! harper trucks 4-1 steel convertible hand truck provides easy conversion from a two-wheel dolly to a four-wheel 45 degree incline truck or platform truck in seconds features: heavy duty robotically welded 1-1/4″ steel frame and handle 800 lbs. Two wheel dolly handle height adjusts from 48″ to 56″ tall easily adjusts to four wheel assist incline truck or four wheel platform truck -900 lbs. Capacity 10″ solid rubber wheels and 5″ swivel casters extra large 18″ x 9″ base plate large 40″ x 13″ platform bed welded to frame wheel guards to protect load